not a product problem but we noticed when we took the old cracked protector up that the rug was very clean a different color from the unprotected carpet.
I placed it on the floor and it seemed to be perfect except that it really smelled badly - a toxic smell. I placed it outside for a few days and it curled up into 5 angled object. Some of the smell is gone but it's still kinked. One is in use and the other is still unwinding.